Inger selwyn



(No Model.) 3 Sheets-Sheet 1. W. s. SELWYN.

LOCK.

Patented Nov. 2 1897.

INVENTOR (No-Model.) 3 Sheets-Sheet 2. W. M. S. SELWYN.

LOOK. No. 592,835. Patented Nov. 2, 1897.

WITNESSES: I INVENTR v wfiw \im Axsm gw.

rug '4 (No Model.) v 3 Sheets-Sheetfi.

W. M. S. SELWYN.

LOOK.

No. 592,835. Patented Nov. 2, 1897.

WITNESSES: INVENTOR Q f/ \KmWMMM AW.

UNITED; STATES PATENT rrrcn.

WILLIAM M. SOHLESINGER SELWYN, OF PHILADELPHIA, PENNSYLVANIA.

Loo K.

SPECIFICATION forming part of Letters Patent No. 592,835, dated November2, 1897.

Application filed September5,1896. Serial No. 604,973. (No model.)

To all whom. it may concern.-

Be it known that I, WILLIAM M. SCHLES- INGER SELWYN, a subject of theQueen of Great Britain, residing at Philadelphia, in the county ofPhiladelphia and State of Pennsyl: vania, have invented certain new anduseful Improvements in Locks; and I do hereby declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

My invention has relation to improvements in looks, with specialreference to such locks on and about receptacles for the temporaryreception and keeping of articles of value, and has for its object aswell the avoidance of the complication and delay incident to the use ofa combination-lock as the provision of greater safety where a number ofpersons use such a receptacle successively. These are obtained, first,by the provision of a lock having changeable locking adjustments;second, by means whereby the adjustment of the lock is changed upon itssuccessive use, and, third, by the furnishing to the user another anddifferent key upon'its successive use, such key being the only one whichwill unlock the lock for the time being. I obtain these objects by themechanism illustrated in the accompanying drawings, in which Figure 1 isa top View of the lock. Fig. 2 is a vertical section. Fig. 3 is across-section on line 1 2, Fig. 2. Figs. 4 and 5 are top views of thetumblers of thelock in different positions. Fig. 6 is an end view ofpart of the tumblers in the position shown in Fig. 5. Fig. 7 is avertical section of the lock on line 3 4, Fig. 1. Fig. 8 is across-section on line 5 6, Fig. 2. Fig. 9 is a cross-section on line 78, Fig. 2. Fig. 10 is a partial view of the magazine with its keys. Fig.11 is a partial view of the interior surface of thecasing surroundingthe magazine. Fig. 12 is top view of a portion of the locking-bolt ofthe lock and of the plate controlling its motion. Fig. 13 is a side viewof the parts shown in Fig. 12. Fig. '14 is a section of the plate shownin Figs. 12 and 13. Fig. 15 is a side view of the catch controlling themotion of the magazine. Fig. 16 is a top View of the catch, and Figs. 17and 18 are views of two keys used in the lock.

Similar letters and figures refer to similar parts throughout theseveral views.

' The lock consists of a casing A, attached to plate Band containing thecylinder or magazine O. This cylinderis provided withanu 1nber of slots,(marked 1 2 3 4, 850., up to 28.) Each slot is normally provided withtwo keys, as shown in Fig. 10, the keys being held apart and in properposition on the cylinder by means of the spiral groove 01, Fig. 11, cutin the inner surface of casingA. Through cylinder 0 and plate B passesbolt D, Fig. 2, provided at one end with nut E and at the other end withplate (1. Portion d of boltD is of larger diameter than the part thatpasses through cylinder 0 and is provided with teeth, as shown moreclearly in" Fig. 8. These teeth engage with teeth of the planet-wheel F.The teeth of thelatter also mesh with the teeth of the stationarysegment G, which is fastened to the casing A. Planet-wheel F is providedwith a short centrally-located shaft f, which engages with the fork H,the latter being loosely pivoted on bolt D. Fork H is provided with aradial slot, Figs. 2 and 8, in which moves catch it. Spring h pressesthis catch outwardly and causes it to engage with the ratchet-teeth c ofcylinder 0. On turning, therefore, bolt D in the direction indicated bythe arrow in Fig. 8 theplanet-wheel F will be moved in the samedirection, and carries the fork H with it. On account of the inclinationof the ratchet-teeth 0 cylinder 0 will not be affected by the motion inthis direction. On, however,-reversing the motion of the bolt D theplanet-wheel F will also travel in the opposite direction to thatindicated by the arrow, and will carry along with it fork H and alsocylinder 0. Although, therefore, the motion of H will be an oscillatingone, cylinder 0 will rotate in one direction only. To further insurecylinderO from traveling in any direction but the desired one, catch T,Fig. 8, engaging with one of the slots of cylinder O, is provided.'Handle I is attached to bolt D in such a manner that it can be movedfrom the position shown in Fig. 2 in full lines to'that shown in thesame figure in dotted lines. When'in-the former position lug i of handleI passes through slots in plates (1, B, and K, so that on turning thehandle I around the central line of D, as axis,it carries along withitbolt D and plate K, the latter being loosely pivoted on bolt D. Themotion of I is limited by the slot 1) in plate B. This slot Z) is onlyat one place (corresponding to the locked position of the lock) wideenough to allow lug t' to enter it, and i is provided with a recess(shown at t", Fig. 2) which allows it to be moved in slot 1) andprevents its being pulled out, except when in the position aboveindicated. Bolt D imparts its motion, as already described, by means ofthe sun-and-planet transmission to fork II, and intermittently to thecylinder or magazine O. The latteris, however,prevented from turning ineither direction until catch T is partially released by lug i of handleI on the latter completing its motion in the direction of the arrow inFigs. 1 and S, which corresponds to the motion for unlocking the lock.This is accomplished by providing catch T with a beveled surface 1,Figs. 15 and 1G, in the path of lug i, so that when the latter has cometo the end of its stroke in this direction it will have moved catch Tsuificiently outward to allow cylinder O to be moved in the desireddirection on the return stroke of I, but the longer face of catch T-7I.c., the face marked tstill prevents the cylinder C from moving in theopposite direction.

The length of slot Z) and the snn-and-planet transmission are soarranged that "each time the handle I is turned, first in one directionfor unlocking the lock and then in the other direction for locking thelook, a new slot of cylinder or magazine 0, with its correspond ingkeys, is brought opposite to the openings a, a and a in casing A.

Plate K is provided with teeth, as shown in Fig. 12, which engage withcorresponding teeth of the locking-bolt L, so that as K is movedbackward and forward by handle I it will move L into looking orunlocking position. Attached to L by means of bolt l are a number offork-shaped tumblers h M M M M and M. (Shown in Figs. 4 and 5.) Thesetumblers are pressed in against casing A by means of springs m, m m 012,772 and m. They are also provided with lugs c,which pass across openinga in casing A as the bolt L is moved forward into unlocking position.Should there now be a key in the slot of cylinder O opposite the openinga, the slots in this key will allow part of the tumblers M to drop in,or, in other words, to move closer toward cylinder 0, whereas the lugson the key will hold the rest of the tumblers in their originalposition, as shown in Figs. 5 and 6. \Vhen in the position shown inthese figures that is, after handle I has been moved a small part of thedistance it has to move to unlock the locktumblers M, M M M M and Mencounter fingers a, n n n m and a of the opposing tumblers N, N N N, Nand N, and if these fingers are in positions corresponding to those oftumblers M they will enter between the jaws of the latter. Should,however, one of the fingers at not be in the proper positioncorresponding to that of its opposing tumbler M, it will strike againstone or the other of the prongs of this tumbler i11- stead of passingbetween them, and thus arrest the further motion of the locking-bolt L.Tumblers N, N N N, N, and N are made U-shaped, as shown in Fig. 7, oneend forming the already-mentioned fingers 11 and the other end beingprovided with lugs 6. These tumblers are pivoted on bolt 0 in such amanner that their lugs e are opposite the opening a of easing A, and thelugs are pressed into this opening and against the key opposite it bymeans of springs s, .9 .5 5", s and s.

\Vhen the lock is turned from its unlocked to its locked position byturning the handle I into the position shown in Figs. 1 and 2, bolt Dturns the cylinder or magazine O, as described above, so that a new slot(slot 1) is brought into operative position opposite openings a, a and aof easing A. One of the two keys'in this slot 1that is, key 1'-will beopposite opening a and the springs s will cause the tumblers N to moveinto positions corresponding to the slots and lugs of this key, as shownin Figs. 2 and 9. Key 1 will come opposite opening a in casing A andwill fall through this opening into the drawer P, as shown in Fig. 2. Bypulling out this drawer the key can be removed by the user of the lock.hen thelock is in this its locked position, the slots in plates (2 and Kand the enlarged part of slot 1) in plate 13 coincide with slot 1 ofcylinder or magazine C, so that i can be withdrawn from these slots byturning the handle I into the position shown in dotted lines in Fig. 2.

To again unlock the lock, key 1 is placed into the slot in plate (Z andis pressed home into slotl of cylinder or magazine C by bringing thehandle I back into the position shown in full lines in Fig. 2. Key 1which before was underneath key 1, will now be above it and oppositeopening a. On now turning handle I to unlock the lock bolt L will carryalong with it tumblers M, moving them against fingers a of tumblers N;but before encountering these the lugs e of tumblers M will have engagedwith key 1 and the tumblers M will be set in such a position that thefingers a can enter between the jaws of the corresponding tumblers M, asshown in Fig. 5, and the motion for unlocking can be completed.

On again locking the lock, slot 2 of cylinder or magazine C is broughtinto operative position, and tumblers M, moving back with bolt L, willagain be in the position shown in Fig. 4. Key 2 is now opposite openinga setting tumblers N in a new position. Key 2 falls through opening ainto the drawer I from where it is again removed by the user of the lockand placed into the slot in (Z for the purpose of unlocking the look. Inthis manner each of the twenty-eightslots of the cylinder or YOUmagazine O,with its respective keys,isbrought successively intooperating position. On using the lockthe twenty-ninth time slot 1 isagain brought into position opposite the openings a, a and a but onaccount of spiral groove a in casing A key 1 ,which o'n unlocking thelock the first time was opposite opening a, is now opposite opening 0F,and key 1 is now opposite a and falls into the drawer P. The lock maytherefore be used another twentyeight times, or altogether fifty-sixtimes, before the same key is again fed to the user.

It is evident now that should any but the right key be placed in thelock the latter will not unlock, as unless this key sets all of thetumblers M in the proper position to allow the corresponding fingers nof tumblers N to pass between the jaws of the former the unlockingmotion of the bolt L will be arrested.

To avoid the possibility of any unauthorized person trying to open thelock by trying a number of keys in it, one after the other, until theright one is discovered, plate K may be provided with catch R, Figs. 12and 14, which moves in groove S of cylinder 0, Figs. 2 and 8. On turningthe handle to unlock the lock this catch will readily pass over andbeyond the key placed in the look before tumblers H encounter fingers'22. As, however, if the key be not the proper one, the motion will thenbe arrested before the lock is unlocked and before catchh of fork H hasengaged with another ratchet-tooth of cylinder 0, the latter will not bemoved by turning the handle I back again, and catch R will thereforeengage with the key placed in the lock and arrest the motion of I inthis direction also, as catch T, Fig. 8, prevents cylinder 0 fromturning, I not having been able to complete its full stroke and releasethis catch. The handle I will therefore be placed in a position in whichit can neither move forward nor backward nor be pulled out of the slotin the plate d to uncover the latter, as it cannot reach the end of itsstroke to the place where the wider part of slot 2) in plate 13 willadmit its removal.

To be mates the keys in the same slot of cylinder or magazine 0 must beso arranged that if the key opposite opening a has, for example, a slotnear its upper part to engage with tumbler M the key opposite opening amust have a slot near its lower part to en-' gage with tumbler N and setfinger n to correspond with the position of tumbler M. This latter keywhen dropped into the slot to come opposite opening a would thereforee11- gage with tumbler M, whereas its mate engaged with tumbler M. Toinsure the keys being dropped into the slot of plate d in the properposition, they are provided with grooves, as shown in Figs. 17 and 18,and the slotin plate K is provided with corresponding lugs, as shown atis, Fig. 12.

When the lock is unlocked, drawer P cannot be pulled out, as thelocking-bolt L passes through the recess 19 of the drawer.

bolt L will permit its passage.

Only when the lock is locked can drawer P be pulled out, as in thatposition recess Z in Lug p prevents the drawer P from being entirelywithdrawn from the lock.

By providing the lock with a larger or less number of tumblers anynumber of keys can be provided for the lock, each key being differentfrom any of the rest, and by providing a corresponding number of slotsin the cylinder or magazine 0 the lock can be made to be used anydesired number of times before the first key used in unlocking it is fedout of the look again. It is obvious that the lock can be usedindefinitely, as each key that has been removed from it has to bereturned for the purpose of unlocking the lock, and therefore takes itsproper position in the magazine.

What I claim as my invention, and desire to secure by Letters Patent, is

1. In a lock, in combination with two separate and independent keys,provided with suitable projections or indentations, tumblers engagingwith the projections or indentations, and mechanism whereby thesimultaneous use of both keys is required to unlock the lock,substantially as described.

2. In a lock, the combination of two or more keys normally stored in thelock, and mechanism whereby, on operating the lock, one of the keys isfed to the user of the same,

substantially as described.

3. In a lock, the combination of two or more keys normally stored in thelock, mechanism whereby the simultaneous use of two of the keys isrequired to unlock the lock, and mechanism whereby, on operating thelock, one of the keys is fed to the user of the same, substantially asdescribed.

4:. In a lock, in combination with two or more keys normally stored inthe lock, mechanism for feeding one of the keys to the user of the lockand for placing another key into operating position in the lock, andmechanism whereby the simultaneous use of both these keys is required tounlock the lock, substantially as described.

5. In a lock, in combination with two or more keys normally stored inthe lock, mechanism whereby on the successive use of the lock anotherand difierent key is fed to the user of the same, and another anddifferent key is placed into operative position in the lock, andmechanism whereby the simultaneous use of both keys is required tounlock the lock, substantially as described.

6. In a lock, in combination with two or more keys normally stored inthe lock, mechanism whereby on its successive use another and differentkey is fed to the user of the same, and another and different key isplaced into operative position in the lock, mechanism whereby thesimultaneous operation of both keys is required to unlock the lock, andmeans for automatically removing the previously-used keys out ofoperative position, substantially as described.

ICO

'7. In a lock, in combination with two or more keys normally stored inthe lock, mechanism for feeding one of the keys to the user of the lockand for placing another one of the keys into operative position in thelock; mech anism whereby the simultaneous operation of both these keysis required to unlock the look; a slot for the reception of the key fedto the user, and means for preventing the removal of the key from theslot, after the motion to unlock the lock has once been commenced, forthe purpose specified.

S. In a lock, the combination with a lock-

